Wow let's see, probably unfair to list it all as I did run a music shop when most of it came out. Plus, there were many years of harassing poor Gunni at the Smekkleysa shop about cd orders to Utah from Iceland. Though I'm glad I harrassed him, he's probably one of my favorite people I keep in contact with from the music world. He's brilliant about all Icelandic things.
I'm not even going to mention the Albums of Sigur Ros because I own them all, some of them I have a couple of versions, such as the double disc Agaetis Byrjun. I also have them all on Vinyl. I have all four () album's, I actually made a terminally ill customer of mine a plaque with autographs from Sigur Ros with 4 covers of the 4 albums for Christmas the year it came out. It was the customer that introduced their music to me.
I also own the Vaka single on all three formats, maybe there was another format I don't remember, but I don't think so, if so I don't think I own the 4th. I have the 3 5 and 10" formats, I think it was 5 that came with the DVD.
I have the Angels of the Universe soundtrack of course, and the Steindor/Rimur EP.
But now I am forgetting the name of one item I have, maybe someone can help. I can't remember if it is Sigur Ros, and it's in my collection on the other side of the states so I can't go look at it but, I remember it showing up in a plastic bag, it was sealed with a red dot sticker. and I believe it has some sort of stamp like emblem on the CD, maybe an H? I got it from Gunni at Smekkleysa but I amn't sure if it was a collaboration with Sigur Ros, or another Sigur Ros EP. (I was in my "buy everything" state during that time.)
I don't remember if it was the original or the re-release but I do remember that one of the versions of Von had a purple cover and it made the baby look particularly creepy.
I also have the backstage pass from their () show in Denver, it was for an autograph I was getting for the plaque, but the band was in a hurry to get to Vegas :), thanks to a lovely lady in pigtails she got the autographs for me when they were on their bus.
and I have a promotion DVD/CD where they used a negative effect on the () for the CD. (The DVD is hilarious now, it was very well done, but the video clips are VERY dated now)
annnnnnnnd, I have the vinyl box sets, the most recent was for Med Sud.
For Jonsi's stuff I have the record, the limited edition and the CD. I didn't buy a poster, and I'm too big a fatty for the T-shirt or other goodies.